Pulp-handling machine.



A. J. HAUG. v PULP HANDLING MACHINE.

APPLICATION FILED APR. 24,19\5-" Pan-med May 16, 1910.

5'SHEETS--SHEET 2.

Putvnfed May 16, 1916.

Eng

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A. a. HALU.

PULP HANDUNG MACHINE.

APPLICATION FILED APR. 24, 1915.

mm om N\ mmi A. J HAUG. PUL'P HANDLING M'ACJHINE. APPLICATION FILED AP R.24 i915.

4 Patented May L6, 1916.

5 SHEETSSHEET a.

EM 4 (Mm a g y i fuw APPL] A. J. HAUG. I L'P HANDLING MACHINE.

CAT |ON map APKLM, 1915.

Tntvnfed May 16, 1916.

5 SHEETS SHEET 4.

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I PULP 'iANDLiNG MACHINE. I

APPLICATION HLED APR-24.19%

1.188.293 mama May 16, 1916.

5 SHEfiTS-SHEET 5.

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ANTON J'. HA'UG', OF NASHUA, NEW HAMPSHIRE, ASSIGNOR TO IMPROVED PAPER I MACHINERY COMPANY, OF NASI-IUA,

MAINE.

NEW HAMPSHIRE, A CGRPORATION 0F PULP-HANDLING MACHINE.

messes.

Application filed April 24,

To all whom z'tmay concern:

Be it knownthat I, AN'roN'J. Hens, a citizen of the United States, and a resident of Nashua, county of Hillsboro, State of New Hampshire, United States of America, have invented an Improvement, in Pulp Handling Machines, of which the following description, in'connection with the accompanying drawings, is a specification, like characterson the drawings representing like parts. i

This invention relates to machines for screening or sorting various materials, and more particularly pulp handling machines, such as screening machines and knotters used in the manufacture of paper, for example, to remove the knots, slivers, and the like from the pulp. v

The objects and features of the invention will best-be understood from the following description, taken in connection with the accompanying drawings, of a machine embodying one form of said invention selected. for the purpose of illustration, it being understood that the invention in its true scope is definitely set forth by theclaims.

In the drawings: Figure 1 is a lateral perspective view of a pulp screening machine or knotter embodying one form of the inven tion, one of the exterior casing sections on plates being removed to show the screening and drying drum; Fig. 2 is a longitudinal sectional elevation of the pulp screening machine or knotter shown in Fig. 1; Fig. 3 is a transverse sectional elevationon line 3-3 of Fig. 2, looking from the left of the latter figure; Fig. 4 is a transverse sectional elevation on line H of Fig. 2, looking from the left of the latter figure; Fig. 5 is a longltudinal sectional elevation of a separating screen or drum, showing more particularly the radial frames and plates and means for securingv the screening plates in place; Fig. 6 is a cross-section of a radial frame and plate carried thereby; Fig. 7 is a longitudinal sectional elevation of a portion of a second, or drying, drum or cylinder; Fig. 8 is a cross section of one of the longitudinal ribs for supporting the screening plates of the dry ing drum; 9 is a perspective view, more particularly of the feed-trough, by which the material is fed into the separating drum,

v and of the chute, by which the knots, etc,

retained in said drum, are fed into the drying drum; Figs. 10 and 11 are transverse Specification of Letters Patent.

racemes tra is, rare.

.1915. Serial No. 23,752.

sections on lines 10-10 and1111 of Fig. 2; Figs. 12 and 13 are details of the screening plate securing or clamping means; Fig. 1-5 is a detail of a clamping means for the screening plates of the drying drum; Fig. 15 is an end view of the spider that carries the radial plates and other associate parts;

Fig. 16 is a detail of a spacing member or ring for the radial plates, seen from the rlght in Fig. 2.

The invention will herein be described and A illustrated in its application to a pulp screening machine or knotter,but it is not to be considered as limited to such application, since as to various features it is equally ap plicable to a great variety of'analogous niachlnes or apparatus, as for example apparatus or machines for screeningsewage, sorting or separating crushed-ores and. many others.

Referring more particularly to Figs. 1 and 2. the frame of the machine in, the embodiment illustrated comprises two circular end castings 2, 3, joined at ,theirperipheries by longitudinal, curved platesyl, 4., which form the lateral walls of the outencasing of g the machine, the whole being of substam tially cylindrical shape. The two, upper plates d, a, may be made removable, one be mg shown removed in Fig. 1/ Each end casting is providedwith'a central, circular openmg 6, 6 and with feet8, 8, which may be bolted to the floor or othecsupporting surface upon which the machine issustained. For convenience or constructlon and as sembling eachend casting will preferably be formed in two semi -circular sections provid'ed with outwardly extending flanges 10 along their straight edges, whereby the two sections of each end casting may be secured together by bolts extending through. said flanges as shown in Fig. 1, or in any other screened. The trough 12 is provided at a point adjacent its inner end with an opening 15, whence the material, passing through the trough, escapes into the screening drum or cylinder 16, and in accordance with the present invention, this opening is preferably provided in the side of the trough, as shown in Fig. 9, and extends substantially the whole length of the drum, the material being delivered therefrom in the form of a sheet, extending substantially throughout the length of the drum. This arrangement is advantageous in that amongst other things the material in passing from the trough into the screening drum 16, facilitates and may contribute to the rotation of the latter.

In the embodiment of the invention chosen for illustrative purposes, the screening drum may be constructed as follows: To the shaft 18, mounted in suitable fixed bearings 20, 22 and extending l0ngitudinally of the machine, is secured in any suit- .able manner a hub i -l provided with four' arms 26 extending outwardly from the hub at right angles to each other. To these arms 15 secured 1n any suitable manner, as

by bolts 28, a spider 30. Herein the pe rimeter of said spider is polygonal, and said spider is provided with a circular central opening 32 and a plurality of openings 34 adjacent its outer margin, Fig. 15. In the embodiment of the invention illustrated, this spider serves to sustain the end plates 36, 37 and peripheral screen. plates 38, which form the walls of the screening drum, as also the radial plates 40. which divide the interior of the'screening drum into pockets for a purpose hereinafter more fully described. It also supports the screening plate sustaining ribs of the hereinafter described drying drum, at one end of the latter.

In accordance with the present invention the end plates and peripheral screening plates of the screening drum are preferably made removable, and the invention contemplates novel means for removably securing said plates in position. To this end, Figs. 2 and 5, the spider 30 is providedv with a flange 42 extending around the outer perimeter of said spider, said flange being inclined outwardly to the plane of the spider, preferably at an angleof substantiall 45, and provided with a plurality of bolt holes 43. Frames 45 for sustaining the radial plates extend radially inward from the apices of the angles of the polygonal perimeter of the spider to a point just beyond the inner edge of the marginal openings 1n the latter, and are secured to the inner.

surface of said spider by bolts 44 and 28, Fig. 5, extending through bosses 4G and 48 provided on said spider, and through eyes 4-7, 49 on said frames. each frame, when in place. thus proiecting at right angles from the inner isurface of said spider. Each f'ame 45, Fig. 6, is provided adjacent its outer edge, and upon each face, With supporting ledges 54, 56, which are preferably inclined downwardly, away from said edge,

which latter carries a plurality of perforated cars 50. j

At their free ends theradial plate supporting frames 45; are secured in any suit able manner, as bolts 58 and 59,'t0 a ing plates 38 are laid with their longitudinal edges resting, one on the flange 56 of a .frame l5 and the other on the-flange 51- of the next following frame d5, the cn edges of said peripheral screening plates resting,

one on an inwardly projecting flange 68 of the spider 30 and the other on an inwardly projecting flange 70 provided on the spacing member (30. Clamping or securing bolts 72, provided with nuts 7% extend through the holes in the flange 42 and carry clamping or securing members 76 having beveled edges 78, Fig. Similarly bolts 80 provided With nuts 81 extend through the holes on the ears 50 on the outer edges of the frames 45 and'carry upon either side of said cars 50 clamping or securing members 82 having beveled edges 84, similar to the clamping members 76. The flange 6(3 of the spacing member 60 is provided with holes to receive bolts 86 carrying nuts 88 and clamping members 90 with beveled edges 92 similar to the clamping members 76 and S2 above'described. It will. be seen that by tightening nuts 74 on bolts 72, nuts 81 on bolts 80, and nuts 88 on bolts 86 the peripheral screening plates 38 will be firmly and renmvably clamped or secured in place around the screening drum.

The marginal openings 34-, provided in the spider 30, and the marginal openings (it provided in the spacing member or plate (30 are covered by the end plates 36 and 3'7, respectively, which are rmnovably clamped or secured in place along their outer edges by clamping members 98 and 100, respectively. 'arried by bolts 72 and 8(3.- l'lereiu said end plates are shown as unperforated, but they may be perforated to poustitute end screen plates, if desired. The openings The screening plates may consist of perforated sheet metal. wire netting or any other suitable material to constitute screening members. It will be seen that by use of formed in the drum by the radial plates 40 1,183,298 a at the clainping means above described, the

screening plates or other screening members can readily be removed and replaced separately or otherwise. The shaft 18 may be rotated in any suitable manner. Herein it is rotated by means of a belt-pulley 102 mounted on the free end of the shaft 18 and driven by a belt front any suitable source of power. As the shaft 18 rotates, the screening drum rotates with it in the direction of the arrow, Fig. 3. The material fed through the trough it falls from the lateral opening 15 into the pockets and in this operation may 'contribute to the rotation of the drum.- The material thus arriving in the drum, is carried upwardly by the pockets, in which operation the good stock escapes through the interstices or perforations in the screening plates or nettings into a receptacle 10%, Figs. 2 and 3, said receptacle having a lateral" opening 106, through vvhiclrthe good stock flows out of the machine. The material, consisting of knots, slivers, chives, etc, which is retained in the screening drum by the screening memhers, is discharged from the buckets as they 1 its successively pass through the upper section of their circular path of niovementin the rotation of the drum, and is caught in a conveyor which it is conveyed into the drying drum 108. While said conveyer may be of any suitable construction, it is herein illustrated in the form or. a fitted chute extending throughout the length of the screening drum and preferably V-shaped, bottom being inclined downwardly through the central openings 32 of the spider 3O of the screening drum into the forward end of the drying drum, tocause the material in said chute to flow freely into the drying drum. ,As shown in Figs. 3 and 9, the-lateral walls of said chute extend sub stantially to the inner edges of the radial plate supporting frames 5, one of said walls, namelythe one to tieiright of shaft 18, Fig. 3, preferably extending upwardly considerably higher than the, opposite one, so as to catch as much of the'material as possible as the latter falls out of the buckets formed bysaid radial plates.

\Vhile it is not essential that, as the screening driun rotates, its'lower portion should be submerged in the liquid contained in the receptacle 104 it is preferable that it should do so as thereby the solid material contained in the buckets of the screening drum is kept more or less in suspension which, together with the movement'of the cylinder through the liquid and consequent circulationof the liquid through the perforations or interstices of the screening plates" or nettings, prevents the solid matter from clinging to said plates to form filters or beds to clog said perforations or interstices.

. hers 142 and nuts 14A, all of which may'in" The end casting 20f the machine may be. provided with a tubular opening 112' egtf tending through the central'opening 62in the spacing member or plate 60' of the screening drum, above theshaft 18, thereby 176' enablingthe interior of the drum to be read-, j ily inspected from without whenever sired. v Projecting from the outer face of the: spider 30, Fig.2, is a polygonal flange 1 151, 5' and secured in any suitable manner to the: arms 116 of a spider 115, having its hub secured upon the shaft- 18, is an inwardly, projecting polygonal flange 118, provided at the apices of each one of its angles with] a screw-threaded.boss 120, one of said bosses 120 being situated in the same plane with", each one of the bosses 18 on the spider a Fig. A plurality of ribs 122, Figs. 2,157 and S, extend from the flange 11s on the 5 spider 30 to the flange 118, each rib being provided at its opposite'ends with ears 12ft, 126 by which itis secured to the bosses and 18, respectively, by bolts 128 and 2 The ribs 122 are in the form of T-irons, 0 Fig. 8, the lateral flanges 130 and 132 hiiifr} ing their upper surfaces preferably inclined downwardly, as shown in said figure, the vertical flange 134 being provided with aplurality of holes 136. Peripheral screen; 5 ing plates 138, which may be'similar totlie" screening plates 38 of the screening druiii, are laid with their longitudinal edges res ing, one on the flange 132 of a rib 122, and n the other longitudinal edge-resting ontli'e'qoj flange 130, of the next'following rib 122, the 1 end edges of the screening plates 138 resting on the surfaces of the polygonal collars 1 1' and 118 of the spiders 30 and 115, respec tively. Clamping means, comprising'bdlts ij 140 extending through the holes-136 of the" flange 13-:i of the ribs 122,clamping mei' all respects be similar in construction and operation to bolts 80, nuts 81 and them clampingor securing members 82 above "d scribed for securing the peripheralscrd plates 38 of the screening drum above .tl scribed in place, may be used 'ilcn'iovably-to secure the peripheral screening'platcs of the 1 15 drying drum to the ribs 122. Bolts 140 are" herein shown as curved, but ma y be straight if desired. Preferably, the collar 118 will" be greater in diameter than the collar 11-4,

to'produce the necessary inclination of the 26 peripheral wall of the drying drum to'cause the material therein to pass tlirougl'r and out of saiddrum. i I The arms 116 of the spider 115 are connected by sector-shaped webs 146, which end; 55

at a sufficient distance from the outer end tr said arms to leave enough space for the'es 148 of the collar 118 and the edge of the sector 146, as indicated in Fig.2 by the arrow, as the drum 108 is rotated by the shaft 18.

A. shower pipe 150 may be provided, said shower pipe extending longitudinally of the machine and being sustained in suitable bearings 159, 152 provided in the end castings 2 and 3 of the machine, Fig. 2. This pipe 150 extends throughout the length of the two drums 16 and 108 and being located above them, said drums and their contents are showered by the water which escapes from a plurality of openings\ provided throughout the length of the pipe, thus facil-itating the screening operation. A second shower pipe 154:, herein located at one side of the drying drum 1.08 and extending only the length of the latter, may be provided if desired.

Instead of using clamping means for the screening plates of the drying drum, similar to those used in the case of the screening drum, a modified form of clamping means shown in Fig. 1.4 may be used. In this modified form the clamping bolt 156 is shown as provided with a rectangularly bent head 158, and one of the clamping members 160 is shown as provided with a recess to receive said head.

It is not deemed necessary to give any further explanation of the mode of operation of the specific apparatus illustrated and described, as such operation will be perfectly clear to those skilled in the art from the description above given of the apparatus itself.

It will be apparent that'it is not indispensable that all of the features of the invention be used conjointly, since they may be used to adrant age separately in various combinations and sub-combin tions It will also be understood that while the invention has herein been described as embodied in the details illustrated, it is not to be considered as circumscribed or limited to these details, or any of them, but it may be variously modified within the true scope of the invention which is definitely set forth by the claims.

Claims:

1. In a screening machine, in combination, a screening drum having screening members; and means disposed exteriorly of said drum rcmovably to secure said screening members together and to said screening drum.

'2. In a screening machine, in combination, a screening drum including screening members; and clamping device's removably to secure said screening members to said drum each clamp device being common to a plurality of screening members.

3. In a screening machine, in combination, a screening drum including screening members; screening member sustaining means upon said drum; and devices removably to clamp said screening members upon said upon said drum and upon said radial frames to sustain said screening members; and means removably to clamp said screening members upon said sustaining means.

61111 a screening machine, a screening drum comprising supports extending longitudinally of said drum; peripheral screening members carried by said supports and extending from one to another; and devices rcmovably to secure said screening members to said supports each clamp device being common to a plurality of screening members.

7. In a screening machine, a screening drum comprising radial frames extending longitudinally of said drum; 'adial screen ing members; means remova ly to secure said radial screening "members to said frames, peripheral screening members; and means ren'iovably to secure said peripheral screening members to said frames.

8. In a screening machine, a screening drum and drum carrying means, said drum comprising screen supporting membersextending longitudinally of said drum, pe- J ripheral screening members, means removably to secure said screening members to said longitudinal supporting members; and devices remo'vably to secure said screening members to said drum carrying. means each 9. In a screening machine, a rotary screening drumand drum carrying means, said drum comprising screen supporting members extending longitudinally thereof, peripheral screening" members, means removably to secure said screening members to said longitudinal"supporting members and devices removably tosecure said screening clamp device being common to a plurality of v screening members.

members to saiddrum carrying means; each clamp device being common to a plurality of screening members and ashaft about ivhich said drum carryingmeans isjrotatable.

10. In a screening machine, a screening drum and drum carrying means, said drum comprising screen supporting members; ex-

tending longitudinally of. said drum, pe-

ripheral screening members, means re mo'vably to secure said peripheral. screening members to said longitudinal supporting 11. In a screening machine, a screening drum and drum carrying means, said drum comprising radial screen supporting frames extending longitudinally of said drum, peripheral screening members, means removably to secure said peripheral screening members to said supporting frames, end plates, means removably to secure said peripheral screening members and end plates to said drum carrying means, radial screening members, and means to secure said radial screening members to said radial frames.

12. In a screening machine, a screening drum and drum carrying means, said drum comprising screen supporting members extending longitudinally of said drum, peripheral screening members, means removably to secure said perpiheral screening members to said longitudinal supporting members, end plates at one end of the drum and means rcmovably to secure said peripheral screening members and said end plates to said drum -carrying means, a spacing member at the other end of said drum, end

' plates, and means to secure said end plates to said spacing member.

' 13. In-a screening machine, a screening drum and drum carrying means, said drum comprising screen supporting members extending longitudinally of said drum, peripheral screening members, means removably to secure said peripheral screening members to said longitudinal supporting members, end plates at one end of the drum and means removably to secure said peripheral screening members and said end plates to said drum carrying means, a spacing member at the other end of said drum, end plates, and

means removably to secure said peripheral,

screening members and end plates to said spacing member.

14. In a screening machine, a screening drum and drum carrying means, said drum comprising radial screen supporting frames extending longitudinally of said drum, pe-

ripheral screening members, means removably to secure said peripheral screening members to said supporting frames, end

plate at one end of the drum, means removably to secure said peripheral screening members and end plates to said drum carrying means, a spacing member at the other end of the drum, end plates for the latter,

16. In a screening machine, in combina-.

tion, a screening drum, a drying drum, a supporting means common to both said drums and suspending them on either side thereof and a shaft about which said common supporting means is rotatable.

17. In a screening machine, in combination, a screening drum; a shaft about which said screening drum is rotatable; and an inspection opening for the interior of said drum from the exterior of the machine.

18. In a screening machine, in combination, a screening drum; a shaft about which said screening drum is rotatable; radial members constituting pockets in said drum; and a trough or conveyer for conveying material from said drum, one of the;walls of said trough being higher than the other.

19. In a screening machine, in cofnbina tion, a screening drum, a shaft about which said screening drum is rotatable, radial members constituting pockets in said drum and a trough or conveyer extendlng into.

said drum for conveying the material from said drum, one of the Walls of said trough being higher than the other.

20. In a screening machine, in combination, a screening drum, a shaft about which said screening drum is rotatable, radial members constituting pockets in said drum and a trough or conveyer extending into said drum and substantially throughout the length thereof for conveying the material from said drum, one of the alls of said trough being higher than the other.

21. A screening drum having longitudinal ribs, said ribs having outwardly extending portions, screening members engaging said ribs and means carried by said out- Wardly extending portions to clamp them thereto.

In testimony whereof, I have signedm name to this specification, in the presence 

